Choke valves, control valves and actuation that are proven around the world in the most demanding surface and subsea applications.
The expertise to understand your flow management challenges and deliver customized solutions for your application and service.
The full range of services to provide global life-of-field support, from initial production to enhanced recovery of mature fields.
Commited to partnering with our customers, employees, communities in which we operate, and suppliers for the long-term.
Learn More About Our People, Culture and Values
Our network of global locations gives us worldwide reach along with the local expertise our customers need, when and where they need it.
Find the Nearest Location or Representative
Committed to the continuous innovation that our customers rely on to overcome their most complex flow management challenges.
Learn How We're Investing in Continuous Innovation
Watch the video "People, Partners & Pride" to learn about the Stream-Flo Group of Companies' values in the words of our founder, Duncan McNeill.
Watch the Video
Learn more about Master Flo's ongoing research and development into new flow management technology and solutions.
Calculate your own choke valve sizing with our SizeFlo™ app. Download the software to your computer or install it on your Apple, Android or BlackBerry mobile device.
Join the Master Flo team and become a partner in helping our customers around the world meet their most challenging flow management requirements.View Available Positions
Thanks to everyone who supported our participation in the 2017 STARS CEO Rescue in the Rockies. Together, we raised $149,409 for STARS Air Ambulance, an organization that provides critical medical services for the communities in which we operate.